Mr Mower Parts Mulcher Blade Set 134149 for 42" Cut Deck Compatible with AYP Sears Craftsman 134149 195-005 532-134149 777-134149 917.270722 YTH1542XPG YTH1542XP Lawn Riding Mower 2 Pack

What It Is

This is a 2-pack of mulching blades designed for 42-inch cutting decks on select AYP (American Yard Products) and Sears Craftsman lawn riding mowers. Mulching blades have a curved, toothed design that cuts grass clippings into fine particles to return nutrients to the lawn.

Fitment & Compatibility

Check these three things before buying:

• Deck size: Must be exactly 42 inches (measured from blade tip to blade tip).
• Model numbers: Compatible with OEM part numbers 134149, 195-005, 532-134149, and 777-134149. Also fits Craftsman models YTH1542XPG, YTH1542XP, and 917.270722.
• Blade dimensions: Center hole is 5/8-inch diameter; blade length is 20.5 inches; blade width is 2.5 inches. Verify your current blade measurements match exactly.

This set replaces OEM blades on most AYP/Sears Craftsman 42-inch riders from the mid-2000s onward. Aftermarket, not OEM—but meets or exceeds OEM specs according to reviews.

Key Things to Know

• Installation difficulty: Easy—requires a socket wrench and a block of wood to keep the blade from spinning. Torque to 70-80 ft-lbs.
• Mulching vs. bagging: These are strictly mulching blades. They will not work well if you plan to bag clippings; use standard lift blades for bagging.
• Balance: Some users report needing to balance these blades before installation—worth a quick check with a blade balancer to avoid vibration.
• Durability: Heat-treated steel holds up well against rocks and roots, but expect to replace every 1-2 seasons depending on use.

Should You Buy It

If you have a 42-inch AYP or Craftsman riding mower and want fine mulching without buying OEM, this is a solid, affordable choice. Best for homeowners who mow regularly and want to return nutrients to the lawn rather than bag clippings. Avoid if you need bagging performance or have a different deck size.